Agilent Technologies HP 8642A/B Specifiche Pagina 287

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How to Use Noise Monitor
Evaluating a Single Offset Frequency
1.
Press the SPAN softkey to increment the frequency span. The increment
values are the measurement ranges denned in the segment tables.
2.
Press
Take Sweep
Take Sweep sets up the Interface, autoranges the
analyzer, measures the span, and holds the averaged display.
NOTE
Noise Monitor allows the user to manipulate the Front Panel
controls of the analyzer. After the Interface is set up, the
analyzer settings can be changed.
(Note that changing the bandwidth to other than the one
set up by the Take Sweep softkey will cause the Marker
function to return inaccurate data.)
3.
Place the analyzer's marker at the desired frequency.
4.
Select the appropriate Marker softkey to read and display the value of
the marker.
Evaluating Phase Fluctuations as a Function of Time
Real Time Noise measurements can be useful for evaluating noise tran-
sients or device sensitivity to mechanical or electrical stimulation. Contin-
uous Real Time display of the noise measurement can be made by turning
the averaging function on the analyzer off (or by setting the analyzer for
repeat display or continuous sweep.)
5-32 Noise Monitor / NewNse Monitor
rev.05SEP89
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